I bought a BX1200 a/b a year ago. I like the sound of it when on a low volume, but as I pushed it futher it started to distorte. I used it for gigs, but it started to slowly lose its guts. last week while using it at a low volume in my living room it cought fire from the inside. I took the head out and it looks like faulty wireing. I don't suggest going out and buying one of these, but if you do have one don't leave it on for long periods of time and don't push it beyond its limits